Who All are mehrum for Ladies and who all mehrum for gents

Matrimonial relation is haraam with women who are one's Mahram, for instance, mother, sister, daughter, paternal aunt, maternal aunt, niece (one's brother's or sister's daughter) and mother-in-law.
Same way Marriage is haram for woman with men who are her Mahram like Father, brother, Son,Paternal uncle, Maternal uncle, Nephews,Father in Law.